DeLancey (1992) and Hongladarom (1994) suppose that ḥdug means 'sit' in Old and Classical Tibetan, and that these languages entirely lack the evidential use of this morpheme well known in 'Lhasa' Tibetan. In contrast, Denwood (1999) sees the Classical Tibetan use of ḥdug as broadly in keeping with its function in 'Lhasa' Tibetan. An examination of examples from Old and Classical Tibetan suggests that evidential uses of ḥdug emerged late in the Old Tibetan period and that the meaning 'sit' is idiosyncratic to the Mdzaṅs blun.

This paper reports on the development of a rule-based part-of-speech tagger for Classical Tibetan. Far from being an obscure tool of minor utility to scholars, the rule-based tagger is a key component of a larger initiative aimed at radically transforming the practice of Tibetan linguistics through the application of corpus and computational methods.